Triston Casas

1B · L/R · age 26.7 · BOS

XX-D60-DAY ILOCTOBER: REINSTATE

Roster status
60-DAY IL (Knee surgery / Arthroscopic wrist surgery)
Service thru 2025
3+032
Service now / projected
4+032 / 4+032
Option years left (2026)
3
Assignments left this season
5 of 5
Contract (2027)
SALARY ARBITRATION ELIGIBLE
Acquired
Drafted 1st Rd (26) '18
Outrighted / DFA'd before
0 / 0
Contract
1 yr, $1.61M (2026)

Next 90 days, by the model

Stays put
81%
Designated
14%
Optioned
2%
Traded
1%
Released or non-tendered
1%

Pushing the cut risk up: last season's WAR (-0.60) raises it, roster status (2) raises it, this season's WAR raises it.

Context the model does not weigh: ZiPS projects 0.8 WAR; 7 IF on the 40-man.

Trained on every 40-man roster snapshot since 2011 and what happened in the following 90 days; it sees roster status, options, service, history and last season's line, not this season's performance or the club's intentions. How well it does.

Is there a job for him next year?

BOS returns 15 IF on the 40-man once 1 free agent leaves; about 8 IF jobs survive a normal winter. By his own recent record he ranks 14th among the returners (-0.4 WAR against a bar of 0.6), which the calibrated model turns into 50% kept through the tender deadline. Ranked by ZiPS and Steamer instead, which credit his longer track record, he is 11th (0.6 WAR, bar 0.7), worth 71% kept on the same model.

By recent record: returning IFProj. WAR
1. Willson Contreras3.5
2. Caleb Durbin2.8
3. Nick Sogard1.7
4. Trevor Story1.7
5. Curtis Mead1.3
6. Romy Gonzalez1.1
7. Nathan Eaton1.0
8. Mickey Gasperlast job0.6
9. Masataka Yoshida0.6
10. Anthony Seigler0.5
11. Andruw Monasterio-0.1
12. Tsung-Che Cheng-0.2
By ZiPS / Steamer: returning IFProj. WAR
1. Caleb Durbin2.4
2. Trevor Story2.0
3. Willson Contreras1.7
4. Kristian Campbell0.9
5. Nathan Eaton0.8
6. Romy Gonzalez0.8
7. Mickey Gasper0.7
8. Curtis Meadlast job0.7
9. Andruw Monasterio0.7
10. Masataka Yoshida0.6
11. Triston Casas0.6
12. Nick Sogard0.6

Departing free agents are excluded; players on club, mutual or player options are counted as returning. The kept probability is calibrated on every September since 2012 using the recent-record projection; the ZiPS/Steamer reading uses the same model with a different ranking, so treat it as a second opinion rather than a calibrated number. Salary enters once arbitration projections publish in October.

October: Eligible once reinstated

On the 60-day IL before the cutoff, so he is on the eligibility list. He has served the 60 days (176), so the only step is reinstatement: the club must open a 40-man spot (the 40-man is full, so someone must be traded, outrighted, released or moved to the 60-day IL) and a 26-man spot before the series roster is submitted.

The post-season eligibility list is fixed at noon ET on September 1: everyone on the 40-man, the 60-day IL or the military list at that moment, who then stays there without interruption. Attachment 25 (Major League Rule 40)

What happens if the club…

option him to the minorsBLOCKED
Not while he is on the injured list. He must be healthy and reinstated first; a rehab assignment (20 days, 30 for pitchers, with his consent) is the only way to send him down injured.
Injured players cannot be sent down
designate him for assignment (or put him on outright waivers)
The club has 7 days to trade him, pass him through outright waivers, or release him; he is paid at the major-league rate and keeps accruing service in the meantime. On outright waivers any club can claim him for $50,000, worst record first, and the claiming club takes his contract (1 yr, $1.61M (2026)). Three-plus years of service give him the Article XX-D choice: elect free agency immediately (giving up the rest of his salary) or accept the assignment, keep getting paid, and elect free agency after the season unless he is added back to a 40-man first. Post-season: an outright after the September 1 cutoff ends his automatic eligibility. He could only return as an approved injury replacement, and only if he accepts the outright and stays on a minor-league reserve list in the organization without interruption; a release makes him ineligible for anyone this October. Because he is on the injured list he cannot be outrighted until he is healthy and reinstated, so a DFA now would have to end in a trade or a release.
Designated for assignment: 7 days · Outright waivers · Article XX-D: the right to walk
release him
Release waivers cost a claiming club $1 but the claimant assumes the whole contract, so expensive players clear. The club owes the full unpaid balance of this season's salary, offset by whatever another club pays him this year. A released player is not post-season eligible for any club this year.
Release waivers and termination pay · Which rate a split contract pays at release
trade himBLOCKED
Not now: players on major-league contracts cannot be traded after the Aug 3 deadline until the day after the World Series.
Trade deadline · 10-and-5 rights · June 15 no-trade for free-agent signees
non-tender him
At the tender deadline (Nov 20) the club can decline to offer a contract: no waivers, no termination pay, and he can be re-signed the same night. Tendering means arbitration, where he cannot be cut more than 20% from this year's salary.
Tender deadline · Arbitration: 3 to 6 years · Maximum salary cut

What the rules say about him

Transaction log

Apr 22, 2026Status changeBoston Red Sox transferred 1B Triston Casas from the 10-day injured list to the 60-day injured list. Recovery from left patellar tendon repair.
Mar 25, 2026Status changeBoston Red Sox placed 1B Triston Casas on the 10-day injured list retroactive to March 22, 2026. Recovery from left patellar tendon repair.
Nov 6, 2025Status changeBoston Red Sox activated 1B Triston Casas from the 60-day injured list.
May 24, 2025Status changeBoston Red Sox transferred 1B Triston Casas from the 10-day injured list to the 60-day injured list.
May 3, 2025Status changeBoston Red Sox placed 1B Triston Casas on the 10-day injured list. Left patellar tendon rupture.
Aug 16, 2024Status changeBoston Red Sox activated 1B Triston Casas from the 60-day injured list.
Apr 27, 2024Status changeBoston Red Sox transferred 1B Triston Casas from the 10-day injured list to the 60-day injured list. Left rib strain.
Apr 21, 2024Status changeBoston Red Sox placed 3B Triston Casas on the 10-day injured list. Left rib strain.
Oct 2, 2023Status changeBoston Red Sox placed 3B Triston Casas on the 10-day injured list. Left rib strain.
Oct 2, 2023Status changeBoston Red Sox activated 3B Triston Casas from the 10-day injured list.
Sep 16, 2023Status changeBoston Red Sox placed 3B Triston Casas on the 10-day injured list retroactive to September 15, 2023. Right shoulder inflammation.
Sep 4, 2022Contract selectedBoston Red Sox selected the contract of 3B Triston Casas, and from Worcester Red Sox.
Jun 14, 2018SignedBoston Red Sox signed 3B Triston Casas.

Service through 2025 per FanGraphs RosterResource; options and this-season service reconstructed from the MLB transaction log (reconstruction; FanGraphs shows 3). Rule 5 exposure deadline Nov 17, 2026.